Scheduling questions & RRD Data format

[stu]

I need to be able to get very granular with the scheduling of some of my Cacti devices. I want to poll them only during business hours so I can get a better idea of the actual usage over several days and weeks. I don't see a way using Windows teask scheduler to accomplish this. Is there a FREE tool that will allow me to do it? Or can someone tell me how to extract the data in a useable format so I can manipulate it manually?

Thanks

stu...

[Lux]

Take a look at Cactistoric in the add ons forum. It sounds like it will do what you want without stopping your polling in the evenings. If you need the raw numbers from your RRAs, than look at the RRDtool manpage. There is a way to dump the information contained in the RRAs (too lazy to look it up now).

Mike

[bulek]

If you don't like task scheduler you can use "nnCron Lite" (http://www.nncron.ru/) instead. It works like unix cron so is probably more flexible in scheduling.

You can manipulate rrd files using update (data write) or dump/fetch (data read) commands. As an alternative you can write your own tool in using headers (where the rrd files structure is defined) from rrdtool sources.

- Piotr